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So after I did my whole engine swap, my next big step was to get it smogged, but the dang thing is bogging around 2k and seems to sputter a bit.

I have done a decent amount of research on the matter and found that it could only be a few things.

I just changed the TPS tonight and it is doing the same thing. The plugs are new, I just did an injector, and throttle body/ intake mani deep cleaning. It increased the power but didn't fix the issue.

My set up is this.
D series to a b16a swap, obd0 ecu, del sol throttle body and intake mani. I do see that the stock tape on the dizzy has been broken, but I don't know of the engines history and I don't know if the timing has been advanced or retarded.

I need some help with the bogging issue, what else can I try? I have been on another civic forum, one that is a bit smaller with less people, I'm hoping that this site will help a bit more.

Thanks all!

 
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It sounds like you know where you could start. The timing will take you 10 minutes and 0 dollars.

Is the ecu throwing any codes?
Codes don't always cause a check engine light.

Does it have a larger throttle body?
MAF?
Right size injectors?

If you have a larger throttle body maybee you need larger injectors also.

 
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yeah having an improperly matched intake mani and throttle body can cause alot of problems with power delivery. someone on here just threw on a skunk2 aftermarket manifold and said the car lost a ton of power and would barely accelerate in lower rpms. its possible the del sol parts are not compatible with the engine you have. any reason why they were changed from the originals?

 
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I have an obd0 and it is currently not throwing any codes, and the reason that the mani and throttle body were changed was because of the stupid strike laws in Cali

Basically, a JDM swap is ok, if and only if the parts on the b16 match those of the engine on a car that was sold in the states. I.e. Del sol.

The injectors I have not changed, perhaps I could buy some higher flow fuel injectors?

I have a p30 obd1 ecu chillin on my work station that I have been meaning to install... I'm not a fan of rewiring that whole mess. But if it needs to be done then so be it.

I heard that one can clean the MAF, I'm going to research that a bit further.
I also heard that the MAP sensor could cause this, is that so?

Thanks again, this is more help than I got on the other forum.

 
Rep Power: 811

you can get a can of MAF sensor cleaner (do not get carb cleaner), and spray that in the maf sensor if its dirty. anything else will kill the delicate sensor mesh. you either have a maf sensor OR a map sensor, but not both. there is no way to clean a map, you just replace it. the map is usually a small sensor on the intake manifold, whereas the maf is usually a large sensor with adapter piece in the air intake piping.

 
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Now I see, I have a map. Most defiantly have a map...
Should this be replaced or just cleaned?
Also where can I search for a vacuum diagram for the 94 del sol w/VTEC? I have been looking around but the ones that am finding are all JDM, I need one that is Cali legal.

Again, thank you all for the help. :

 
Rep Power: 811

cali is such a problem lol. try a new map sensor, preferably a honda part and make sure it is the proper sensor. now the problem is, im not sure which is more important to match, the ecu or the intake mani. im guessing you want a map that matches the ecu you have.but it may not work right if the intake mani is different than what it expects.

 
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I'm gonig to wait till next paycheck, get an obd0 to obd1 harness converter, new map sensor and then just load up on red bull one night and get it knocked out.
In the mean time I'm going to try to advance the timing a bit.

If this all fails then I'm going to burn it all...

 
Rep Power: 208

Just use proper (factory) timing right now. Advancing it will not help if it run smoother. Just use a timing light. I would look for fuel mixture problems. Is the "sputtering you describe like a misfire? Or is it like a backfire in the exaust? Do you smell unburnt fuel coming from the tailpipe?

You could be choking the engine if you put on a smaller throttle body and/or intake.

I don't know where you can get a vacuum hose diagram. For now just double check and make sure there are no vacuum leaks (unconnected/unplugged hoses or connections). That is something that could be easily missed during a swap and would make your engine run crappy.

 
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The fuel mixture thing is what I may be looking into now, found out that the o2 sensors need to be converted from the 2 to only one heated o2 sensor..
This is becoming an expensive project.

So the verdict is:
Obd0 to obd1
adjust the tps.
Move the o2 sensor
Sweet talk the DMV lady so I can get a 60 day pass, cause right now I'm driving with expired tags...

 
Rep Power: 208

Yes, the O2 sensor could definately be causing that problem. You are using a multi meter to adjust the TPS right?

 
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I have yet to work with the multi meter, I need to get a 9v batt to get it working again. I'll work on getting a heated o2 sensor installed, I don't have a welder so I have to wait till payday to have someone install it.
The wiring is what I'm sort of dreading... I already did the dpfi to mpfi, dizzy rewire, VTEC etc.... My back can't take too much more!

Haha you all are awesome! Think I found my new fav forum, I'll start posting my pics of my swap on here for y'all to see.

Thanks again.

 
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Double post

 
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So I was dickin around with the throttle and the tps. I had failed to tune it to factory voltage which I did last night. It change the point at which the engine bogs from about a 1/5th of the throttle to about only the first 1/10 th. I am thinking I should keep fooling around with that for a little while.
Anyway, thought this may be of some use in the diagnosing process.

 
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Okay guys, I got my harness for the obd0 to obd1, my 4 wire o2 sensor and am ready to to start wiring.
But to my disappointment I have found that I will need to get an obd1 dizzy.

How can I tell if I have an obd1 dizzy and if I don't, will a oem replacement for a 94 del sol work on this engine?

I'm planning on the whole swap of these parts taking a few days, time permitting. Any tips, ideas, or pointers would be amazing.

Thanks all.